package com.code.day13;

public class Day13StringBuilder {
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        System.out.println(sb);

        StringBuilder sb1 = new StringBuilder("Hello");
        System.out.println(sb1);

        System.out.println(sb1.append("刘大胆").append("大胃袋"));
        System.out.println(sb1.reverse());
        System.out.println(sb1.toString());
        System.out.println(sb1.length());

    }
}
